mulle-bootstrap: Understanding mulle-bootstrap (II), Recursion

foo went out of fashion. Your project bar needs the new library powerfoo.
Interestingly powerfoo depends on foo. Otherwise functionally it’s
just more of the same - it knows its version number - but it’s more modern.

mulle-bootstrap fetch

mulle-bootstrap fetch will now clone powerfoo from Github into the .repos
folder. I will then detect, that there is a .bootstrap folder inside powerfoo
and fetch the dependency foo indicated in it’s repositories file: